<!DOCTYPE html>
<html lang="zh-cn">
<head>
	<meta charset="utf-8">
	<title>036-盒模型宽高的限制.html</title>
	<style>
		div{
			/*width: 400px;*/
			width: 50px;
			/*height: 400px;*/
			background: red;
			min-width: 300px;
			/*max-width: 600px;*/
		}
	</style>
</head>
<body>
	<div>
		这是内容
	</div>
</body>
</html>